Nick punched the number for Jim Brass into his cell phone. "Brass, it's Nick. Hey, listen, we've got a development in the Vargas case. No, we haven't identified a suspect per se, however, Sanders tested the mystery DNA from the pillowcase against our known DNA from the scene and came up with something interesting. Well our mystery donor is a first degree relative of both Dr. Vargas and Ms. Herrera. Something like that. Yeah, I thought you might think so. Ok. Sara and I will meet you there in about 20 minutes."

He hit the end button on his cell phone and looked up at Greg who was still standing there, "Thanks, Greg."

"That's what I do," Greg replied smiling.

Nick turned to head out in search of Sara, who had gone in search of Grissom to relay the news to him. Before he could get out the door, Greg queried, "So, Nick, you and Sara seemed a little cozy there in the layout room a few minutes ago." His expression was conspiratorial and indicated he'd like a little more information.

Nick suppressed a grin as he walked out into the hallway, "Not that it's any of your business, Sanders."

"Ouch," Greg replied, his expression curious.

Nick found Sara standing in the doorway of Grissom's office. He placed a hand on her back to announce his presence to her. She turned her head toward him and gave a slight smile, her frustration still evident. He smiled back.

Grissom looked at Nick, "Sara tells me you've got a new development." Grissom sat there waiting for a response from Nick.

Nick replied, "I called Brass, he's going to bring Dr. Vargas and Ms. Herrera back in for questioning." He looked at Sara, "We're meeting him there in 20 minutes." He looked back over at Grissom, "Hey, Gris, Sanders took the initiative on this one."

Grissom smiled at Nick and then turned back to his work, "I'll keep that in mind, Nick."

Nick turned toward Sara again, "Let's go meet Brass." His fingers grazed her back as he turned to leave.

"I'll meet you in the parking lot, Nick. I have to get my jacket." She called after him and she also turned to leave Grissom's office.

"Ok," Nick called back over his shoulder as he headed outside. His steps were purposeful and he was concentrating on the information they'd received, trying to figure out where it might be taking them. He almost bumped into Warrick on his way out the door.

"Hey, Nick, dude, watch where you're going," Warrick commented as he dodged the door.

An apologetic look crossed his face, "Sorry, War. I was just thinking about this case."

An amused look crossed Warrick's face, "Are you sure you didn't have Sara on the mind?"

Nick tried unsuccessfully to suppress a grin, "And just what do you know about that, Warrick?"

Catherine walked up and joined them, "Hey, Nicky." She flashed him an amused smile.

Warrick just laughed.

"I think I know." Nick grinned. "Hey, Catherine, been talking to Warrick I see."

Catherine just grinned, "Come on, you didn't think you could get away with making out with Sara in my living room and not have anyone know about it, did you?"

Nick chuckled, "Thanks, Cath."

Sara had grabbed her jacket and came through the doors just at the tail end of Catherine's comment. She smirked at Warrick and Catherine and chose to ignore the conversation, instead turning to Nick, "Ready to go meet Brass?"

He turned to her, "Yeah."

Catherine looked at them quizzically, "New development on the case?" Warrick looked on with interest.

Nick nodded, "Yeah, Greg wasn't getting anything out of CODIS, so he took a little initiative and compared the mystery DNA to the known DNA from the crime scene. Whoever it is, is a first degree relative of Dr. Vargas and Ms. Herrera."

Catherine's jaw dropped slightly, "Mind if I come along?"

"Be my guest, you interviewed them both in the first place, but you might want to get an ok from Grissom since he put us a primary on the case." Nick replied.

Catherine looked over at Warrick, "I'll dial, you drive." She pulled out her cell phone and began to punch in Grissom's number.

Warrick took the keys from Catherine and headed toward the Tahoe they had just parked and followed Nick and Sara toward LVPD Headquarters where Brass would be bringing Dr. Vargas and Delia Herrera in for questioning.